and matthew, of course, you were a correspondent in moscow for a very long time here. it seems at least there's a split. you've got russia's foreign minister who actually criticized putin before he signed this ban. so what is going on here? is this a power play? and is this something that is actually going to take effect? >> i mean, you're right. there has been a very rare split in the russian political elite about this issue. there's been some criticism that was leaked to the press in russia about how some officials including the foreign minister concerned about what the impact this may have. also an opposition newspaper in russia has issued a petition, saying the law should not been enacted. that's had more than 100,000 signatures. obviously, it's something that divides russian society. but make no mistake, it is a power play. it's a response to that u.s. act, as you mentioned, a law signed by obama a couple of weeks ago intended to penalize, sanction russian officials connected with this particular custody case and this tax evasion case in russia. >> so matthew, thi